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Wiki information Urianus:
Urianus was a legendary king of the Britons as accounted by Geoffrey of Monmouth. He was the son of King Andragius and was succeeded by Eliud. Geoffrey may possibly have based the character on that of Urien Rheged, although there is no resemblance...
Eliud, also known as Elihud, was a legendary king of the Britons, as recounted by Geoffrey of Monmouth. He was preceded by Urianus and succeeded by Cledaucus. He also conquered Dylan the King of great Tritons. He is otherwise unattested.